Editors : Laetitia Fradet
36 articles
Article
Observation of the steering torque applied by the rider on a cargo bicycleFrançois May, Jules Ronné, Laura Dubuis, Antoine Muller, Thomas Robert
Published on January 30, 2025
Article
Two different roles of the trunk segment during the anticipatory phase of gait initiationRomain Bechet, Romain Tisserand, Alexis Bart, Laetitia Fradet, Floren Colloud
Ensuring balance is vital for everyday movement. Gait initiation, the transition from quiet standing to a whole-body steady movement, is a common paradigm to investigate the quality of balance-movement coordination. During gait initiation, stereotyped anticipatory lower-limb muscle activations create a mechanical instability to generate a forward rotation of the whole-body before the first foot- off helping movement initiation (Crenna & Frigo, 1991). However, this assumption was based only on the centre of pressure displacement and a linear inverted pendulum model of the whole-body, neglecting the rotational contribution of segments to the movement. When investigating the internal whole-body angular momentum (HM) around the mediolateral axis during stepping, the body rotates backward before the first foot-off, mainly because of the large inertia of the trunk segment (Begue et al., 2021). However, differences might exist between stepping and gait initiation because stepping implies stopping the forward motion initiated at the first step. During gait initiation, robust activations of trunk extensor muscles were recorded before the first foot-off (Ceccato, Sèze, Azevedo, & Cazalets, 2009). Yet it remains unclear whether these trunk muscle activations contribute to the whole-body forward acceleration, to the whole-body stabilisation (by limiting the forward HM), or both. Adding mass to a segment can modify its inertia, enabling to explore its contribution. Here, we have compared two different trunk mass conditions to highlight the contribution of the trunk segment to HM ( ), and thus to the balance-movement coordination.
Published on January 30, 2025
Article
Upper limbs motion analysis in cerebral palsy, towards performance assessmentJulie Rozaire, Alexandre Naaim, Sonia Duprey, Emmanuelle Chaleat-Valayer
Published on January 30, 2025
Article
Machine Learning- Enhanced Biomechanical Analysis for Robotic RehabilitationJinan Charafeddine, Hani Hamdan, Wafaa Mohammed Ridha Shakir, Ikram Athmani
Published on January 30, 2025
Article
Dissecting the smile: a spatio-temporal studyFélix Marcellin, Emilien Colin, François-Régis Sarhan, Stéphanie Dakpé
Published on January 30, 2025
Article
Elbow force generation capacities evaluation of post-stroke and multiple sclerosis patients: a pilot studyElyse Larribau, Aurélie Tomezzoli, Boris Cassard, Marie Babel, Emilie Leblong, Charles Pontonnier
Published on January 30, 2025
Article
Balance analysis of autistic children during beam walkingThomas Carron, Romain Tisserand, Romain Bechet, Aurélie Benchekri, Christel Bidet-Ildei, Laetitia Fradet
Autism Spectrum Disorder (ASD) is characterised by persistent deficits in communication and social interaction, as well as restricted, repetitive patterns of behaviour, interests, or activities. Although not included among the diagnostic criteria, motor disorders are also part of the clinical phenotype of ASD, and their origins are largely under-researched (Mosconi et al., 2015). Among these motor disorders, specificities in postural control and gait initiation have been identified (Benchekri et al., 2023), suggesting that balance mechanisms are impacted by ASD. Walking on a narrow beam requires the ability to maintain balance with a reduced base of support (BoS) along the medio-lateral (ML) direction. When balance is challenged, humans can use various strategies to increase stability, such as increasing the size of the BoS to enhance the whole-body centre of mass (CoM) shifts and/or rotating segments to modulate whole-body angular momentum (AM) (Hof, 2007). To rely on the “extend the BoS” strategy is limited when walking on a beam. Authors have shown that the main stabilisation strategy during this type of task focuses on regulating the AM of different body parts (Chiovetto et al., 2018) and also that a significant active control is required to stabilise motion especially along the ML axis (Bauby & Kuo, 2000). Assuming that children with ASD exhibit unique balance characteristics in motor tasks, it is important to explore the extent of their particularities by analysing their performance during challenging balance tasks such as beam walking.
Published on January 30, 2025
Article
Corticospinal Excitability and Muscle Synergies during Visually-Guided Walking TaskYosra Cherni, Marco Ghislieri, Laurent Bouyer, Catherine Mercier
Published on January 30, 2025
Article
Can the supination resistance test help determine the effects of foot orthoses on the foot and ankle biomechanics during walking?Eléna Payen, Ahmed Dami, Kelly Robb, Nader Farahpour, Pier-Luc Isabelle, Jacques Abboud, Gabriel Moisan
Published on January 30, 2025
Article
Neuromuscular fatigue and motor learning: kinematic compensationsAbdellah Hassar, Suzie Lajeunesse, Martin Simoneau, Jason Bouffard
Published on October 24, 2025
Article
Biomechanical Reflections of Elephant Locomotion in reduced GravityArthur Dewolf, Thibaut Toussaint, Raphael Mesquita
Published on October 24, 2025
Article
Contact stress in dysplastic hips before and after periacetabular osteotomyAriane Lavoie-Hudon, Victor Grenier, Xavier Robert-Lachaîne, Ebrétchè Renaud V.I. Amoakon, Étienne L. Belzile, Philippe Corbeil
Published on October 24, 2025
Article
Effects of periacetabular osteotomy on the reaction forces within the dysplastic hip jointAriane Lavoie-Hudon, Victor Grenier, Xavier Robert-Lachaîne, Étienne L. Belzile, Philippe Corbeil
Published on October 24, 2025
Article
Beyond postural mechanisms: specific and fine-tuned postural strategies emergedPrince François, Andréa Sorel, Amélie Poiré-Lehoux, Francine Pilon, Yann Sonier
Published on October 24, 2025
Article
Kinematic analysis of autistic children during beam walkingAdrien Péneaud, Nasser Rezzoug, Aurélie Benchekri, Christel Bidet-Ildei, Laetitia Fradet
Published on October 24, 2025
Article
A comparative analysis of whole-body angular momentum during treadmill and overground WalkingFlorian Etheve, Jérémie Begue, Margaux Levasseur, Eve Charbonneau, Ophélie Larivière, Teddy Caderby
Published on October 24, 2025
Article
Training Effects on Running Gait Variability in Older AdultsRaphael Mesquita, Mario Nuñez-Lisboa, Arno Marotta, Marine Moulin, Arthur Dewolf
Published on October 24, 2025
Article
Modelling torque-angle curves in patients with upper limb motor impairment: a preliminary studyAurélie Tomezzoli, Boris Cassard, Emilie Leblong, Charles Pontonnier
Published on October 24, 2025
Article
Predictive Simulations for Delayed Fatigue Onset in FES Hand CyclingKevin Co, Pierre Puchaud, Florent Moissenet, Mickaël Begon
Published on October 24, 2025
Article
Balance control mechanisms during hanstandsThomas Robert, Charlotte Le Mouel, Romain Tissserand
Published on October 24, 2025
Article
Quantification of balance control strategies while cyclingFrançois May, Laura Dubuis, Antoine Muller, Thomas Robert
Published on October 24, 2025
Article
How do ankle passive intersegmental moments of spastic adults differ from normative curves?Simon Hinnekens, Sacha Guitteny, Alexandre Naaïm, Raphael Dumas, Sébastien Mateo, Yoann Lafon
Published on October 24, 2025
Article
Modulation of foot placement during landings from different jump lengthsRomain Bechet, Romain Tisserand, Laetitia Fradet, Floren Colloud
Published on October 24, 2025
Article
Assessment of the arm 3D angular velocity during arm elevation, in people with subacromial pain syndrome and asymptomatic people: a proof of concept studyCamille Emile, François Petit, Nathalie Maurel, Quentin Lejeune, Josette Bertheau, Christelle Nguyen, François Rannou, Marie-Martine Lefèvre-Colau, Alexandra Rören
Published on October 24, 2025
Article
Optimal estimation of forearm muscle activations evoked by implanted electrical stimulation in complete quadriplegiaValentin Maggioni, Pierre Schegg, Thomas Guiho, Christine Azevedo-Coste, François Bailly
Published on October 24, 2025
Article
Accurate finite element analysis of an intraocular lens in a postcatarctous capsular bag during accommodationSouéla Toumi, C. Cavinato, Amélie Lurton, Fabien Gayic, Fannie Castignoles, Philippe Sourdille, Denis Delage, Franck Jourdan
Published on October 24, 2025
Article
Capacity vs. Performance in Cerebral Palsy: A Preliminary Motion AnalysisJulie Rozaire, Alexandre Naaïm, Mickael Begon, Sonia Duprey, Emmanuelle Chaleat-Valayer, Yosra Cherni
Published on October 24, 2025
